HOMEVULNERABILITIESCVE-2021-23434
HIGH

CVE-2021-23434

CWE-843Published: August 27, 2021· Updated: Jun 17, 2026

8.6
CVSS v3.1

Official Description

This affects the package object-path before 0.11.6. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

NVD Source

Technical Analysis

CVE-2021-23434 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 8.6.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Affected Vendors & Products

Debian1 product(s)
debian linux
object-path_project1 product(s)
object-path
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9eb
PATCHhttps://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9eb
ADVISORYhttps://lists.debian.org/debian-lts-announce/2023/01/msg00031.html
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423
ADVISORYhttps://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453
ADVISORYhttps://lists.debian.org/debian-lts-announce/2023/01/msg00031.html
ADVISORYhttps://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423
ADVISORYhttps://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453

All References (10)

→
https://github.com/mariocasciaro/object-path%230116Broken Link
→
https://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9ebPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2023/01/msg00031.htmlMailing List · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453Exploit · Third Party Advisory
→
https://github.com/mariocasciaro/object-path%230116Broken Link
→
https://github.com/mariocasciaro/object-path/commit/7bdf4abefd102d16c163d633e8994ef154cab9ebPatch · Third Party Advisory
→
https://lists.debian.org/debian-lts-announce/2023/01/msg00031.htmlMailing List · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1570423Exploit · Third Party Advisory
→
https://snyk.io/vuln/SNYK-JS-OBJECTPATH-1569453Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2021-23434
CVSS Score8.6 / 10
SeverityHIGH
WeaknessCWE-843
CISA KEVNo
Affected2 vendor(s)
PublishedAug 27, 2021

Related CVEs (CWE-843)

CVE-2010-2299
10.0
CVE-2021-33970
10.0
CVE-2020-25575
9.8
CVE-2019-10231
9.8
CVE-2019-8161
9.8
CVE-2025-59717
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2021-23434 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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